Hey,
You need to follow my instructions in this thread http://www.cnczone.com/forums/bencht...17765-cnc.html
This post specifically http://www.cnczone.com/forums/bencht...ml#post1626224
Then buy one of these Upgrade USB 5 Axis CNC Breakout Board Interface Adapter for Stepper Motor Driver | eBay
For machine control software I use LinuxCNC and for drawing I use DeltaCAD and for Cam I use SheetCAM.
If either of you guys do not have the control boxes then you need to buy drives as well, but that information does not bear repeating here.
Good Luck.